CN212820515U - Door cover structure of vacuum-pumping centrifugal machine - Google Patents
Door cover structure of vacuum-pumping centrifugal machine Download PDFInfo
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- CN212820515U CN212820515U CN202020956637.9U CN202020956637U CN212820515U CN 212820515 U CN212820515 U CN 212820515U CN 202020956637 U CN202020956637 U CN 202020956637U CN 212820515 U CN212820515 U CN 212820515U
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Abstract
The utility model discloses a door cover structure of a vacuum-pumping centrifugal machine, which comprises a door cover, a lock and a lock catch, wherein the door cover is arranged on a machine body through a hinge and covers a centrifugal cavity, the lock is arranged on the machine body, the lock catch is arranged on the door cover and is matched with the lock, a circle of sealing ring is arranged between the open edge of the centrifugal cavity and the machine body, and a door cover pressing plate matched with the sealing ring is arranged at the bottom of the door cover; a sealing pressing plate is arranged between the open edge of the centrifugal cavity and the machine body, a circle of pressing groove is formed in the outer side of the sealing ring, and the machine body is matched with the pressing groove of the sealing ring through a panel to press the sealing ring onto the sealing pressing plate. The utility model discloses have better leakproofness, and the switch is convenient, is applicable to low-speed and high-speed centrifuge, is used for evacuation and semi-vacuum centrifuge simultaneously.
Description
Technical Field
The utility model belongs to centrifuge, concretely relates to evacuation centrifuge's door closure structure.
Background
The centrifugal machine is an instrument which accelerates the sedimentation velocity of particles in liquid by utilizing the strong centrifugal force generated by the high-speed rotation of a rotor and separates substances with different sedimentation coefficients and buoyancy densities in a sample, and is widely applied to the fields of life science, medicine, chemistry, board protection and the like. In the scientific research field, a very large relative centrifugal force is needed when certain substances are separated, and the relative centrifugal force obtained by the rotary head of the centrifugal machine is in direct proportion to the square of the rotating speed of the rotary head, so that the rotating speed of the rotary head needs to be increased in order to obtain a larger relative centrifugal force, and generally, the rotating speed of the rotary head exceeds 30000 r/min.
Another serious problem is brought about as the speed of the rotor increases: the surface of the rotor is severely rubbed with air, so that the power of a driving motor is greatly increased, and a large amount of heat is generated, which is not beneficial to the temperature maintenance of a sample in the rotor. In order to solve the problem, generally, the centrifugal cavity is pumped into a vacuum or semi-vacuum state, so that the problems of overlarge power of a driving motor and heat generation of a rotary head can be effectively solved. Because the centrifuge must open and close the door closure and get the sample when working, how to guarantee the leakproofness of door closure and conveniently open and close again is the important problem that needs to solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a good and convenient door closure structure who opens and close of evacuation centrifuge of leakproofness.
Realize the utility model discloses the technical scheme that the purpose was adopted as follows:
the utility model provides a door cover structure of a vacuum-pumping centrifugal machine, which comprises a door cover, a lock and a lock catch, wherein the door cover is arranged on a machine body through a hinge and covers a centrifugal cavity, the lock is arranged on the machine body, the lock catch is arranged on the door cover and is matched with the lock, a circle of sealing ring is arranged between the open edge of the centrifugal cavity and the machine body, and a door cover pressing plate matched with the sealing ring is arranged at the bottom of the door cover; a sealing pressing plate is arranged between the open edge of the centrifugal cavity and the machine body, a circle of pressing groove is formed in the outer side of the sealing ring, and the machine body is matched with the pressing groove of the sealing ring through a panel to press the sealing ring onto the sealing pressing plate.
A barb structure is arranged at the contact part of the sealing ring and the door cover pressing plate; an O-shaped ring is arranged between the sealing pressing plate and the open edge of the centrifugal cavity.
A flange is arranged at the contact position of the centrifugal cavity and the sealing pressure plate, and the O-shaped ring is arranged between the flange and the sealing pressure plate.
An air spring is arranged between the machine body and the door cover.
Advantageous effects
The utility model discloses when centrifuge door closure was closed, door closure clamp plate pressed on the sealing washer to "barb" structure on the sealing washer is also compressed tightly by door closure clamp plate, and installs O type circle between seal clamp plate and the centrifugal chamber turn-ups. When the centrifugal cavity starts to be vacuumized, the centrifugal cavity is gradually changed into negative pressure, the sealing pressing plate and the centrifugal cavity flanging are sealed by the O-shaped flange, the sealing ring can be in good contact with the door cover pressing plate due to the fact that a circle of lubricating grease is coated on the sealing ring, the barb structure on the sealing ring can greatly enhance the sealing reliability, and the sealing structure can be simultaneously suitable for low-speed and high-speed centrifugers and is used for vacuumizing and semi-vacuum centrifugers.
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the closing structure of the door of the present invention.
Fig. 2 is a partial enlarged view of fig. 1 according to the present invention.
Fig. 3 is a schematic view of the opening of the door cover of the present invention.
In the figure: 1. the device comprises a machine body, 2, a rotary head, 3, a door cover, 4, a centrifugal cavity, 5, a lock catch, 6, a panel 7, a lock, 8, a hinge, 9, an air spring, 11, a door cover pressing plate, 21, a sealing pressing plate, 22, a sealing ring, 23 and an O-shaped ring.
Detailed Description
Referring to fig. 1-3, the door cover structure of the vacuum centrifuge provided by the present invention comprises a door cover 3 arranged on a centrifuge body 1 through a hinge 8 and covering a centrifugal chamber 4, an air spring 9 arranged between the centrifuge body 1 and the door cover 3, a lock 7 arranged on the centrifuge body 1, and a lock catch 5 arranged on the door cover 3 and matched with the lock 7, wherein a circle of sealing ring 22 is arranged between an open edge of the centrifugal chamber 4 and the centrifuge body 1, and a door cover pressing plate 11 matched with the sealing ring 22 is arranged at the bottom of the door cover 3; a sealing pressure plate 21 is arranged between the open edge of the centrifugal cavity 4 and the machine body 1, a circle of pressing groove is arranged on the outer side of the sealing ring 22, and the machine body 1 is matched with the pressing groove of the sealing ring 22 through a panel 6 to press the sealing ring 22 on the sealing pressure plate 21; a barb structure is arranged at the contact part of the sealing ring 22 and the door cover pressing plate 11; an O-shaped ring 23 is arranged between the sealing pressure plate 21 and the open edge of the centrifugal cavity 4; the hinge 8 is a hinge.
The bottom of the sealing pressure plate 21 is provided with a groove for installing an O-shaped ring 23, the O-shaped ring 23 is arranged in the groove, a flanging is arranged at the contact part of the open edge of the centrifugal cavity 4 and the sealing pressure plate 21, the O-shaped ring 23 is arranged between the flanging and the sealing pressure plate 21, and the O-shaped ring 23 is pressed on the flanging of the centrifugal cavity 4 by the sealing pressure plate 21.
The utility model discloses during the use, at a small amount of lubricating grease of sealing washer 22 upper end face coating, when door closure 3 closed, door closure clamp plate 11 and sealing washer 22 contacted forward gradually after from, further closed door closure 3, combine locking until hasp 5 and tool to lock 7, door closure clamp plate 11 compresses tightly sealing washer 22 on sealing clamp plate 21 this moment, and sealing clamp plate 21 forms sealedly through O type circle 23 and centrifugal chamber 4. When vacuum pumping is started, the centrifugal cavity 4 is gradually changed into negative pressure, the door cover pressing plate 11 and the sealing ring 22 are in a pressing state, lubricating grease exists, the adsorption force of a contact surface is increased, and the contact part of the sealing ring 22 and the door cover pressing plate 11 is provided with an agnail structure, so that the sealing reliability can be greatly improved.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (4)
1. A door cover structure of a vacuum-pumping centrifugal machine is characterized by comprising a door cover, a lock and a lock catch, wherein the door cover is arranged on a machine body through a hinge and used for covering a centrifugal cavity, the lock is arranged on the machine body, the lock catch is arranged on the door cover and matched with the lock, a circle of sealing ring is arranged between the open edge of the centrifugal cavity and the machine body, and a door cover pressing plate matched with the sealing ring is arranged at the bottom of the door cover; a sealing pressing plate is arranged between the open edge of the centrifugal cavity and the machine body, a circle of pressing groove is formed in the outer side of the sealing ring, and the machine body is matched with the pressing groove of the sealing ring through a panel to press the sealing ring onto the sealing pressing plate.
2. The door cover structure of the vacuum-pumping centrifuge as claimed in claim 1, wherein the contact part of the sealing ring and the door cover pressing plate is provided with a barb structure; an O-shaped ring is arranged between the sealing pressing plate and the open edge of the centrifugal cavity.
3. The door cover structure of the vacuum-pumping centrifugal machine as claimed in claim 2, wherein a flange is arranged at the contact part of the centrifugal cavity and the sealing pressure plate, and the O-shaped ring is arranged between the flange and the sealing pressure plate.
4. The door cover structure of vacuum centrifuge according to any of claims 1 to 3, wherein a gas spring is provided between said body and the door cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020956637.9U CN212820515U (en) | 2020-05-31 | 2020-05-31 | Door cover structure of vacuum-pumping centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020956637.9U CN212820515U (en) | 2020-05-31 | 2020-05-31 | Door cover structure of vacuum-pumping centrifugal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212820515U true CN212820515U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020956637.9U Active CN212820515U (en) | 2020-05-31 | 2020-05-31 | Door cover structure of vacuum-pumping centrifugal machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN212820515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522540A (en) * | 2021-09-13 | 2021-10-22 | 深圳市瑞沃德生命科技有限公司 | Rotor and centrifugal machine with same |
-
2020
- 2020-05-31 CN CN202020956637.9U patent/CN212820515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522540A (en) * | 2021-09-13 | 2021-10-22 | 深圳市瑞沃德生命科技有限公司 | Rotor and centrifugal machine with same |
| CN113522540B (en) * | 2021-09-13 | 2022-02-18 | 深圳市瑞沃德生命科技有限公司 | Rotor and centrifugal machine with same |
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